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Finding the Fourth Proportional to 70,076.18, 104,912.84 and 65,155.70

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Solution

The fourth proportional to 70,076.18, 104,912.84 and 65,155.70 is: 97,546.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,076.18 : 104,912.84 = 65,155.70 : x
  2. Step 2: Convert to fraction form
    70,076.18/104,912.84 = 65,155.70/x
  3. Step 3: Cross multiply
    70,076.18x = 104,912.84 × 65,155.70
  4. Step 4: Simplify right side
    70,076.18x = 6,835,669,529.19
  5. Step 5: Solve for x
    x = 6,835,669,529.19/70,076.18
  6. Step 6: Final answer
    x = 97,546.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.